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Finding the Fourth Proportional to 1,300,664.40, 1,949,441.40 and 669,253.20

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Solution

The fourth proportional to 1,300,664.40, 1,949,441.40 and 669,253.20 is: 1,003,079.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,300,664.40 : 1,949,441.40 = 669,253.20 : x
  2. Step 2: Convert to fraction form
    1,300,664.40/1,949,441.40 = 669,253.20/x
  3. Step 3: Cross multiply
    1,300,664.40x = 1,949,441.40 × 669,253.20
  4. Step 4: Simplify right side
    1,300,664.40x = 1,304,669,895,162.48
  5. Step 5: Solve for x
    x = 1,304,669,895,162.48/1,300,664.40
  6. Step 6: Final answer
    x = 1,003,079.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.